B. Beautiful Paintings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes…

B. Beautiful Paintings 题目连接: http://www.codeforces.com/contest/651/problem/B Description There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes happy every time he passes from a painting…

B. Beautiful Paintings   time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becom…

B. Beautiful Paintings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes…

B. Beautiful Paintings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes…

There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes happy every time he passes from a painting to a more beautiful one. We are allowed to arranged pictures in any order. What is the m…

time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes happy every time he pa…

A. Joysticks time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Friends are going to play console. They have two joysticks and only one charger for them. Initially first joystick is charged at…

题目大意: 给定集合,对于任意一个的排列,记,求. 很明显每次搞出一个长度为的最长上升序列,然后把元素给删掉,答案增加. 直接暴力需要. 但是可以进行优化. 设有个,将个数从小到大排序,记为长度为的数组. 则答案为 于是可以优化到. #include <cstdio> #include <cctype> #include <algorithm> using namespace std; const int T=1001; int n; int a[T],len; inl…

题意:后一个比前一个大就加一,问最大次数. #include<cstdio> #include<cstring> #include<algorithm> #include<iostream> #include<cstdlib> #include<string> #include<cmath> #include<vector> using namespace std; ; ; ); const int inf =…

大意: 给定序列$a$, 可以任意排序, 求最大下标i的个数, 满足$a_i<a_{i+1}$. 这个贪心挺好的, 答案就为n-所有数字出现次数最大值.…

题意: 给定序列,重新排序,使严格上升的子序列最多.求这些子序列总长度. 分析: 贪心,统计每个元素出现次数,每次从剩余的小的开始抽到大的,直到不再剩余元素. 代码: #include<iostream> #include<algorithm> using namespace std; const int maxn = 1005; int a[maxn]; int m[maxn]; int main (void) { int n;cin>>n; for(int i =…

B. Beautiful Paintings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes…

 cf之路,1,Codeforces Round #345 (Div. 2) ps:昨天第一次参加cf比赛,比赛之前为了熟悉下cf比赛题目的难度.所以做了round#345连试试水的深浅.....       其实这个应该是昨天就写完的,不过没时间了,就留到了今天.. 地址:http://codeforces.com/contest/651/problem/A A. Joysticks time limit per test 1 second memory limit per test 256…

DFS A - Joysticks 嫌麻烦直接DFS暴搜吧,有坑点是当前电量<=1就不能再掉电,直接结束. #include <bits/stdc++.h> typedef long long ll; const int N = 1e5 + 5; int ans = 0; void DFS(int a, int b, int step) { if (a <= 0 || b <= 0) { ans = std::max (ans, step); return ; } if (a…

Description X is well known artist, no one knows the secrete behind the beautiful paintings of X except his friend Y, well the reason that Y knows X's secrete is that he is that secret. Y is a programmer and he helps X with drawing paintings using co…

651B Beautiful Paintings 651A Joysticks 点击可查看原题 651B是一个排序题,只不过多了一步去重然后记录个数.每次筛一层,直到全为0.从这个题里学到一个正确姿势:给定一个排好序的的数组,怎么把它变成一个去重加权的新数组. 只需要一个while循环+一个指针. #define N 10 #include<iostream> using namespace std; int main() { ,,,,,,,,,}; int b[N]={}; int c[N]…

A. Joysticks time limit per test:1 second memory limit per test:256 megabytes input:standard input output:standard output Friends are going to play console. They have two joysticks and only one charger for them. Initially first joystick is charged at…

B. Beautiful Paintings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes…

这几篇博文只是为了记录学习Beautiful Soup的过程,不仅方便自己以后查看,也许能帮到同样在学习这个技术的朋友.通过学习Beautiful Soup基础知识 完成了一个简单的爬虫服务:从allitebooks.com抓取书籍的书名和每本书对应的ISBN码,然后通过ISBN码去amazon.com抓取对应的价格. 第一部分 Beautiful Soup的基础知识 Beautiful Soup的安装和查找.浏览的方法. 网络爬虫: 从allitebooks.com抓取书籍信息并从amazon…

开始学习网络数据挖掘方面的知识,首先从Beautiful Soup入手(Beautiful Soup是一个Python库,功能是从HTML和XML中解析数据),打算以三篇博文纪录学习Beautiful Soup的过程,第一篇是Beautiful Soup基础知识,后两篇利用前边的Beautiful Soup知识完成一个简单的爬虫,抓取allitebook.com的书籍信息和ISBN码,再根据ISBN码去amazon.com抓取书籍对应的价格. 一.Beautiful Soup简介 网络数据挖掘指…

之前我们从网页中提取重要信息主要是通过自己编写正则表达式完成的,但是如果你觉得正则表达式很好写的话,那你估计不是地球人了,而且很容易出问题.下边要介绍的Beautiful Soup就可以帮你简化这些操作,更加方便的提取网页中信息. Beautiful Soup 3 目前已经停止开发,官方推荐在现在的项目中使用Beautiful Soup 4 Beautiful Soup是有中文文档的,里边有详细的介绍,文档地址是: https://www.crummy.com/software/Beautifu…

前言:这几天忙着写分析报告,实在没精力去研究django,虽然抽时间去看了几遍中文文档,还是等实际实践后写几篇操作文章吧! 正文:以下是本人前段时间学习bs4库找的一些网址,在学习的可以参考下,有点多,就不啰嗦了! 点击url左侧文字直接进入相关网页 点击url左侧文字直接进入相关网页 点击url左侧文字直接进入相关网页 BeautifulSoup使用总结:http://blog.chinaunix.net/uid-26722078-id-3519422.html Beautiful Soup…

题目链接 题意:定义"beautiful number"为一个数n能整除所有数位上非0的数字 分析:即n是数位所有数字的最小公倍数的倍数.LCM(1到9)=2520.n满足是2520的约数的倍数.dp[len][val][lcm]一维为数的位数,一维为%2520的值(保存原数不可能,也没必要,2520是可行的最小公倍数最大的一个),一维为当前数位的lcm,判断满足的条件是val%lcm==0.这题离散化2520的约数,否则空间开不下. #include <bits/stdc++.…

Win  10    下python3.6 使用Beautiful Soup  4错误 You are trying to run the Python 2 version of Beautiful Soup under Python 3. This will not work 解决方案: 以管理员运行cmd C:\WINDOWS\system32>pip install beautifulsoup4Collecting beautifulsoup4 Using cached beautiful…

hihoCoder #1425 : What a Beautiful Lake(美丽滴湖) 时间限制:1000ms 单点时限:1000ms 内存限制:256MB Description - 题目描述 Weiming Lake, also named "Un-named Lake", is the most famous scenic spot in Peking University. It is located in the north of the campus and is su…

如何在Python3.x中使用Beautiful Soup 1.BeautifulSoup中文文档:http://www.crummy.com/software/BeautifulSoup/bs3/documentation.zh.html 2.BeautifulSoup下载:http://www.crummy.com/software/BeautifulSoup/ 3.解压到Python目录 4.运行cmd执行:python setup.py install即可: 5.使用下面的命令验证是否成…

Beautiful Soup是一个非常流行的Python模块.该模块可以解析网页,并提供定位内容的便捷接口. 使用下面两个命令安装: pip install beautifulsoup4 或者 sudo apt-get install Python-bs4 如果想安装最新的版本,请直接下载安装包来手动安装,也是十分方便的方法. 在这里我安装的是 Beautiful Soup 4.5.1 下载完成之后把解压包放到site-package目录下,cd到解压包中,运行下面的命令即可完成安装: sudo…

4692: Beautiful Spacing Time Limit: 15 Sec  Memory Limit: 128 MBSubmit: 46  Solved: 21[Submit][Status][Discuss] Description 文章是一些单词组成的序列,单词由字母组成.你的任务是将一篇文章的单词填充到一个网格中,其中网格包含W列和足够多的行.为了布局之美,以下限制都需要满足. 1.文章中的文字需要按照原有的顺序放置.下图表示了将4个单词的文章“This is a pen”放入…

hdu4888 Redraw Beautiful Drawings Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 2007    Accepted Submission(s): 447 Problem Description Alice and Bob are playing together. Alice is crazy abou…